Methods for radio resource pre-reservation in an unlicensed channel, network nodes and wireless devices

Abstract

Disclosed is a method, performed by a network node, for radio resource pre-reservation for communication of a first wireless device in an unlicensed channel. The method comprises determining an additional spectrum resource allocable for communication based on a successful clear channel assessment procedure conducted by the network node. The additional spectrum resource is different from a first resource used for ongoing communication with the first wireless device. The method comprises transmitting, to the first wireless device, control signalling indicative of the additional spectrum resource.

1 . A method, performed by a network node, for radio resource pre-reservation for communication of a first wireless device in an unlicensed channel, the method comprising:
 determining an additional spectrum resource allocable for communication based on a successful clear channel assessment procedure conducted by the network node, wherein the additional spectrum resource is different from a first resource used for ongoing communication with the first wireless device; and   transmitting, to the first wireless device, control signaling indicative of the additional spectrum resource.   
     
     
         2 . The method according to  claim 1 , wherein the additional spectrum resource is part of an active bandwidth part. 
     
     
         3 . The method according to  claim 1 , wherein the additional spectrum resource is on a configured bandwidth part different from an active bandwidth part. 
     
     
         4 . The method according to  claim 1 , wherein the control signaling indicative of the additional spectrum resource comprises information indicative of an additional channel occupancy time corresponding to an allowed usage time window of the additional spectrum resource. 
     
     
         5 . The method according to  claim 1 , wherein the control signaling indicative of the additional spectrum resource comprises downlink control information indicative of the additional spectrum resource. 
     
     
         6 . The method according to  claim 1 , the method comprising:
 performing the clear channel assessment procedure with one or more wireless devices other than the first wireless device.   
     
     
         7 . The method according to  claim 6 , wherein performing the CCA procedure comprises transmitting a signal to the one or more wireless devices after finalizing the CCA procedure with the first wireless device. 
     
     
         8 . The method according to  claim 1 , the method comprising:
 receiving, from the first wireless device, an indication on whether the first wireless device intends to use at least a part of the additional spectrum resource.   
     
     
         9 . The method according to  claim 8 , wherein the indication comprises one or more of: a transmission of uplink data on the additional spectrum resource, and a response indicating the resource intended for use by the first wireless device. 
     
     
         10 . The method according to  claim 1 , wherein transmitting, to the first wireless device, control signalling indicative of the additional spectrum resource comprises transmitting, to the first wireless device, the control signalling indicative of the additional spectrum resource without receiving a scheduling request corresponding to the additional spectrum resource from the first wireless device. 
     
     
         11 . The method according to  claim 1 , wherein transmitting, to the first wireless device, control signalling indicative of the additional spectrum resource comprises transmitting, to the first wireless device, over an open shared spectrum, the control signalling indicative of the additional spectrum resource. 
     
     
         12 . The method according to  claim 1 , wherein transmitting, to the first wireless device, control signalling indicative of the additional spectrum resource comprises transmitting, to the first wireless device, over a restricted non-open spectrum, the control signalling indicative of the additional spectrum resource. 
     
     
         13 . A method, performed by a wireless device, the method comprising:
 receiving, from a network node, control signalling indicative of an additional spectrum resource where a clear channel assessment has been successfully performed by the network node, wherein the additional spectrum resource is different from a first resource used for ongoing communication between the wireless device and the network node.   
     
     
         14 . The method according to  claim 13 , wherein the control signalling indicative of the additional spectrum resource comprises information indicative of an additional channel occupancy time corresponding to an allowed usage time window of the additional spectrum resource. 
     
     
         15 . The method according to  claim 13 , wherein the additional spectrum resource is part of an active bandwidth part. 
     
     
         16 . The method according to  claim 13 , wherein the additional spectrum resource is on a configured bandwidth part different from the active bandwidth part. 
     
     
         17 . The method according to  claim 13 , wherein the control signalling indicative of the additional spectrum resource comprises downlink control information indicative of the additional spectrum resource. 
     
     
         18 . The method according to  claim 13 , the method comprising:
 transmitting, to the network node, an indication on whether the wireless device intends to use at least a part of the additional spectrum resource.   
     
     
         19 . The method according to  claim 18 , wherein the indication comprises one or more of: a transmission of uplink data on the additional spectrum resource, and a response indicating the resource intended for use by the wireless device. 
     
     
         20 . The method according to  claim 13 , wherein receiving, from the network node, the control signalling indicative of the additional spectrum resource comprises receiving, from the network node, over an open shared spectrum, the control signalling indicative of the additional spectrum resource. 
     
     
         21 - 24 . (canceled)